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无循环前缀的MC-CDMA系统中新的盲检测技术

A Novel Blind Multiuser Detection for MC-CDMA Systems without Cyclic Prefix
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摘要 无循环前缀的MC-CDMA系统可以提高系统的频带利用率,但同时会产生码间串扰(ISI),影响系统性能,文章将无循环前缀的MC-CDMA系统等效为一个具有码间串扰的高速DS/CDMA系统,提出了一种基于预滤波最小二乘恒模算法(PF-LSCMA)的盲多用户检测技术。仿真结果表明,在相同的环境下本文的算法比MC-CDMA常用的LMMSE多用户检测技术具有更低的误码率。 The MC-CDMA without cyclic prefix can enhance frequency effficiency,but will generate ISI and degrade the performance of system.The article treats MC-CDMA system without cyclic prefix as a DS/CDMA system with ISI and produces a novel blind multiuser detection based on pre-fiher I_SCMA.The simulation indicates that the proposed method has the low BER performance than common LMMSE multiuser detection for MC-CDMA systems.
出处 《计算机工程与应用》 CSCD 北大核心 2006年第11期138-140,共3页 Computer Engineering and Applications
基金 安徽省高等学校青年教师科研资助计划项目(编号:2003jql48)
关键词 多载波CDMA 多径衰落 码间串扰 盲多用户检测 预滤波LSCMA multicarrler CDMA,multipath fading,Inter Symbol Interference(ISI),blind muhiuser detection,Pre-filter-LSCMA
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参考文献9

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